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ABENWHERE_LOGEXP_INITIAL - WHERE LOGEXP INITIAL

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Short Reference

- IS INITIAL

... operand IS $[NOT$] INITIAL ...

Effect

This relational expression is true if the value of the operand operand is (is not) the initial value of its built-in dictionary type.

The following applies to operand:

• SQL expressions except for aggregate expressions and window expressions can be specified.

• In a HAVING clause, aggregate expressions can also be used.

Notes

• The expression IS $[NOT$] INITIAL is suitable for checking the type-dependent initial value, regardless of its actual data type, instead of comparing it with a type-compliant operand that contains the initial value. This is of particular use in dynamic conditions.

• The expression IS $[NOT$] INITIAL must not be confused with the expression IS $[NOT$] NULL.

• If used, the relational expression IS $[NOT$] INITIAL enforces strict mode from Release .

Example

Reading of the rows of the DDIC database table DEMO_DDIC_TYPES in which a dynamically specified column contains their type-dependent initial value.

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